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Valves and extensions

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A tubeless valve has to seal without overtightening: Velox valves have a conical seal and a removable core, so you can inject sealant.

Presta or Schrader, alloy or brass

In Presta, CNC-machined 7075 T6 aluminium comes in 44 mm (black, red, blue or gold), 60 and 80 mm; brass in 44 and 60 mm. In Schrader, black aluminium in 44 and 60 mm. Choose the length by rim depth; for deep-section wheels, 60 and 80 mm extenders. And to switch from one valve type to the other, the Presta/Schrader adapter, also in packs of 10.